Coffee brewer



NQVfB, 1938. 1 TAXAY 2,135,543

COFFEE BREWER Filed Jan. 20, 1936 Patented Nov. s,

' UNITED STATES PATENT-ferries BREWER;

i Julius Taxay. Chicago, Ill., usignor, by directand mesne assignments; -ot one-half to James lil.` Parker, Chicago, lll., and one-half to Miracle Household Appliance C a corporation oi Illinois orporation, Chicagotlil.,

application January zo, use, sex-m in.l sans s claims. A(ci. 53.4,

This invention relates improvements in coffee One object of the invention is to provide a cotl'ee brewer which operates on the vacuum principle l but which is of a form which renders it morcconven'ient .in use than the conventionaltwo piece glass coifee brewers ofthe Silex" type and which enables the lower or outer receptacle to be readily cleaned'or scoured.

. Another object ofthe invention' is to provide a coee brewer which comprises an outer receptacle, the wall of which has an annular and preferably slightly' radially expansible portion so shaped as to provide a stable support for and .seal with the body portion of a'rremovable innerreceptable in which the ground co'iIee is placed and into which water from the outer receptacle is raised by vapor pressure tov form a brewwhich is drawn back into the outer receptacle when the brewer is removed from the source4 of he t.

Another object lof the invention is to provide acoffee'brewer comprising an outer water-holding receptacle) and an inner coffee holding re ceptacle telescopically receivable within the other and'each having a sealing surface on the body portion thereof which cooperate when the receptacles are in operative position to provide a sealed pressure cham r in the outer receptacle beneath thelower receptacle, the arrangement being such that the seal can readily be broken and t the receptacles easily separated.

4form of the invention which is adapted forcom-J- mercial use as in restaurants or other commercial establishments. l

A In the drawing I is' an outer receptacle which in the form illustrated resembles an ordinary ,domestic coil'ee pot orzpercolator and is provided with a handle il. pouring spout i2 and cover i3.' An inner receptacle is shown 'of substantially cylindrical form withinthe receptacle il, and is provided with a funnel il whlchdep'ends into the lower portion of member il but terminates above the bottom thereof. I'he upper .end of the funnel is enlarged'toprovide an annular seat il for a removable iilter or strainer Il which is shown as of cup shape with a for'aminous bottom.

'I'he lower portion of the body of the receptacle ills provided with an annular bulge or enlargement ila which is preferably Aconvex in vertical section and arrangechto seat frictionally within an annular portion ina of the member i0 which converges or tapers inwardly and downwardly wherebywhen the memberi 4 has been pressed into the outer receptacle to the position illustrated, an

. air tight sealis provided between the receptacles. Where the r eptacle I0 is formed of metal, the

downward m vement of the portion ila toward sealing Yposition eil'ects a radial outward wedging effect on the thin wall portion I 0a which tends to slightly expandthe latter and provide an airtight connection between the 'sealing portions and retains'the inner receptacle in the proper position.

It will be noted that the wall of thevv receptacle i4 above the annular bulge or band ila is spaced from the adjacent wall of member I0 whereby a slight tilting or cooking of the member i4 out .of the coaxial position shown will break the seal between the portions Ilia and ida and enable the member I4 to be lifted freely out o1' member I0.

In use, the desiredquantity of water is placed 'in the receptacle il, member i4 is pressed into the position illustrated and ground coiee placed in the latter, the lter il being in position. The

4cover i3, if desired,may be placed in position since the ange ila thereof seats within the upper end of receptacle I0 and exteriorly of the upper' end of receptaclek i4. ,e

The brewer is placed over the source of heat and as .the water approaches the boiling point the vapor is entrappe'd within the pressure chamber formed in the lower portionof member I0 due to the lsealing contact of portions lila andita. The developed pressure i'orces the water up through the funnel i5, and Lthrough the lter or strainer i l until `the lower end of the funnel is uncovered by the descending level of the water in I the member Il. The brewer can then be removed from the source Iof heat or the latter turned oil, and' due tothe partial vacuum created within the pressure chamber due to the cessation of the application oi' heat. the' coilee brew is drawn downwardly through the filter into the receptacle i0. The inner receptacle can then be released from engagement with the outer member by'tilting or cooking the"v upper end slightly as above mentioned and removed together `with the coiee Brounds. and-the'clear cofiee brew served from 7* lthe outer receptacle.

seal.

employed to provide In Figure 3 a form of the invention is disclosed provide the necessaryair tight seal between the.- inner and outer receptacles but it will be seen that the receptacles may 'be made of glass, porcelain or like materials if'desired and a cushioning and sealing gasket of rubber, fabric'or the like the required seal, yif desired.

which is adapted for usein restaurants 'or like establishments where larger quantities of coffee are to be made. -In thegure I8 is a lower or outer receptacle which may be made -of,oyen ory pyrex glass, if desired.

A sealing member Il,

metaly, is provided at the upper end of the receptacle I8 and engages a complementary shaped portion 2li of an 'upper or inner bowl or receptacle v 2| to provide an air tight connection therebe-` tween. The inner receptacle has a funnel 22 which depends into the pressure chamber and preferably yis so shaped at the upper end as to .provide a seat 23 for a iilter as described above. 'I'he principle of operation of this form ofthe invention is the saine as in thepreviously described modification. v

'Ihe receptacle Il is `shown 'as' provided withn spiggot 24 for drawing of! the coifee brew and a water intake 25 for supplying water prior to the beginning of each brewing operation.- The source of heat may be a .conventional burner II.

While the `present improvements operate on the well known vacuum principle, it will be seen that the provision o f cooperating sealing portions on the bodies of the bowls or receptacles, as distin-g guished from the conventional glass conee brewers wherein the seal iseifected between a gasket on the funnel of the upper bowl and the interior of the constricted neck of the lower bowl, provide a support f or the upper bowl of relatively large diameterwhich resists tilting of the inner receptacle with respect to the outer and breaking the seal therebetween. It. will also be observed that the sealing portions being. prferably f downwardly diminishing diameters enables the inner receptacle of the nrst described modication of the-invention -to be-pressed directly downwardly into sealing position without turning or rotating the same and that in the commercial form shown diameter of the same throughout its length as j pended claims.

in Figure 3, the weight of the receptacle 2| is gen- It willalso be seen that upon renovalof the vinner or dipper'receptacle, the interior' of the lower or outer receptacle. is readllyaccessible for cleansing or scouring due to the relatively large compared with the gonstrlcted neck of a lower bowl of conventional glass vacuum coffee brewers.

While I have shown and described certain embodiments of the invention for .the purpose ofiT illustration, I do not wishto be restricted specifically thereto except as so limited by the ap- 1. A coifee brewer comprising an outer waterholding receptacle having af downwardly tapered annular sealing surface therein, and an inner coffee holding receptcle arranged to telescope bodily within said outer receptacle and provided with a downwardly extending funnelgsaid inner receptacle having an annular sealing portion adjacent the base thereofand above said funnel arranged unseat :nationally within a relatively narpreferably of flexible with an annular sealing area'above rowannular portion oi'said sealing surface to form an air tightconnection therewith, the portion of said inner receptacle above said sealing portion being spaced from the adjacent walls of said outer receptacle to enable the inner receptacle to be tilted merely sidewise within said outer receptacle to break the'seal and release the inner receptacle from engagement with the outer rcceptacle.

2. A vacuum coffee receptacle having an inwardly and' downwardly tapered expansible wall portion, an inner receptacle comprising alcoifee holding body and a downwardly depending funnel adapted to extend into the lower portion of said outer receptacle, and an annular Yformation `on the body of said inrier receptacle adapted to b e pressed into frictional contact with said tapered expansible wall section to provide an' air tight connection i therewith.

3. A vacuum type coffee brewer comprising an outerreceptacle the interior of which comprises a pressure chamber inthe lower'portion, an inner r receptacle holding chamber at the upper, portion,

and a vdownwardly tapered wall commonto said chambers, and an inner receptacle having a de` pending funnel at vthe lower end adaptedto project into said pressure chamber and provided said funnel having an outer surface convex in vertical sec' tion adapted to seat within and form a' seal witl said tapered wall -of said outer receptacle, said receptacles being spaced apart above saidsealing surfaces yto provide an. annular space to accommodate radial tilting of the inner receptacle within the outer receptacle to break the seal and `releasethe inner receptacle to enable the same to be removed freely from the outer receptacle.

4. A vacuum type coffee brewer A comprising inner and outer receptacles, theouter receptacle having an inwardly oil-set annular downwardly ,tapered wall portion constituting a sealing area intermediate the ends of said receptacle, said inner receptacle being insertable/within said outer receptacle and having a bottom provided with a depending funnel and a shoulder outwardly conyvex in vertical sectionadjacent the lower end brewer comprising an outer thereof adapted to engage and 'frictionally seat within said sealing area of the outer receptacle to provide a relatively narrow annular seal therebetween, the uppenportion of said inner receptacle above saidsealibeing spaced from the surrounding wall of the said seal ean be broken and the iinner receptacle released by tilting the same laterally within -said outer receptacle.

5. A vacuum type (coffee brewer comprising 'outer receptacle whereby` inner and outer receptacles, the outer receptacle havingian inwardly oil'set annular downwardly tapered wall portion constituting a sealing4 area intermediate, the endsNof said receptacle, said inner receptacle being insertable within said outer receptacle and having a bottoni provided with ra depending funnel and a-shiulder outwardly convex in vertical; section adjacent the lower end thereof adapted to engage and frictionally seat within said sealing area of the outer receptacle to provide a relatively narrow annular seal therebetween, the upper portion of said innerrecep tacle abovesaid seal being spaced from the sur- '7 rounding w of 'the outerl receptacle whereby said seal may be broken vby tilting the inner receptacle laterallywithin said outer receptacle.

f JULIUS TAXAY. 

